Modelling Air-to-Water Sound Transmission Using Standard Numerical Codes of Underwater Acoustics

Authors
  1. Thomson, D.J.
  2. Chapman, D.M.F.
  3. Ellis, D.D.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
In a recent paper, it was shown that a normal mode underwater acoustic propagation code can be modified to model air-to-water sound transmission simply by altering the mode excitation coefficients. These new coefficients are the exact wave-theoretic expressions for the air-to-water transmission problem. Herein, it is shown that if the height of the source above the surface is sufficiently small, then the air-to-water transmission problem can be approximated accurately by replacing the source in air with a source in water at a depth...
Keywords
parabolic equation;PE;normal mode;multipath expansion;SAFARI;air-to-water;acoustic propagation;wavelength;wavenumber;effective source;dipole radiation pattern;transmission loss;benchmark problem
Report Number
DREP-P-91-01 — Preprint
Date of publication
01 Feb 1991
Number of Pages
22
DSTKIM No
CA041565
CANDIS No
802762
Format(s):
Electronic Document(PDF)

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